[Monetdb-developers] GDK::BAT_select_ problem

Niels Nes Niels.Nes at cwi.nl
Sun May 24 08:46:36 CEST 2009

On Sat, May 23, 2009 at 11:04:16PM +0000, RichardGUO Fei wrote:
>    Hi,
>    I am doing some developments in GDK. More concretely, I want to
>    modify the behavior of a SQL select statement. I print some
>    messages in BAT_select_ as I think that most of SQL selects
>    would be compiled into plusieur BATselects. Is that right?
>    I used mserver --dbinit 'include sql;' to start, and saw some
>    messages coming out (BAT_select_ is also used for
>    authentication). However, after I logged in by using mclient -l
>    sql, no matter what kind of SELECT I performed, there was just
>    no message. Was BAT_select_ called after all in this case?

The easiest way to get output (debug statements) from gdk is
to run using mclient with -fraw and use --algo and --performance
on the mserver5.

>    Thank you very much for your responses.
>    Regards,
>    Richard
>      __________________________________________________________
>    Á¢¿ÌÏÂÔØ MSN ±£»¤¶Ü£¬±£ÕÏ MSN °²È«Îȶ¨£¡ [1]ÏÖÔÚ¾ÍÏÂÔØ£¡
> References
>    1. http://im.live.cn/safe/

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Niels Nes, Centre for Mathematics and Computer Science (CWI)
Science Park 123, 1098 XG Amsterdam, The Netherlands
room C0.02,  phone ++31 20 592-4098, fax ++31 20 592-4312
url: http://www.cwi.nl/~niels   e-mail: Niels.Nes at cwi.nl

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